Editing Demographics of Switzerland (section)

==Census==
{{Historical populations
|type =
| percentages = pagr
|footnote = Historical population as of 1 January of each year, Source: [[Federal Statistical Office (Switzerland)|Federal Statistical Office]]<ref name=swiss-population-1861-2019>{{cite web |url=https://www.bfs.admin.ch/bfs/de/home/statistiken/bevoelkerung/stand-entwicklung/bevoelkerung.assetdetail.13707412.html |title=Demographic balance of the permanent resident population, 1861-2019 |date=27 August 2020 |id=su-e-01.02.04.05 |publisher=[[Swiss Federal Statistical Office]] (FSO), Swiss Confederation |location=[[Neuchâtel]] |format=XLS |type=official statistics |access-date=2 August 2021}}</ref>
|1861 | 2515396
|1871 | 2673468
|1881 | 2840501
|1891 | 2972024
|1901 | 3318985
|1911 | 3756842
|1921 | 3883360
|1931 | 4070042
|1941 | 4268964
|1951 | 4717200
|1961 | 5360153
|1971 | 6193064
|1981 | 6335243
|1991 | 6757188
|2001 | 7197638
|2011 | 7870134
|2021 | 8680890<ref name=swiss-population-2021q1>{{cite web |url=https://www.bfs.admin.ch/bfs/de/home/statistiken/bevoelkerung/stand-entwicklung.assetdetail.17404879.html |title=Ständige Wohnbevölkerung nach Staatsangehörigkeitskategorie, Alter und Kanton, 1. Quartal 2021 |language=de |trans-title=Permanent resident population by nationality, age and canton, Q1 2021 |date=21 June 2021 |id=cc-d-01.02.03.02 |publisher=[[Swiss Federal Statistical Office]] (FSO), Swiss Confederation |location=[[Neuchâtel]] |format=XLS |type=official statistics |access-date=2 August 2021}}</ref>
}}

{{Main|Census in Switzerland}}
The ''Federal Population Census'' ({{langx|de|Eidgenössische Volkszählung}}, {{langx|fr|Recensement fédéral de la population}}, {{langx|it|Censimento federale della popolazione}}, {{langx|rm|Dumbraziun federala dal pievel}}) has been carried out every 10 years starting in 1850.<ref>with the exceptions of the censuses of 1888 and 1941.</ref> The census was initiated by [[Swiss Federal Council|Federal Councillor]] [[Stefano Franscini]], who evaluated the data of the first census all by himself after Parliament failed to provide the necessary funds.<ref>[http://www.bfs.admin.ch/bfs/portal/en/index/infothek/erhebungen__quellen/blank/blank/vz/geschichte.html History of the Federal Population Census], Swiss Federal Statistical Office, accessed October 2007</ref> The census is now conducted by the [[Swiss Federal Statistical Office]], which makes most results available on its [https://www.bfs.admin.ch/bfs/en/home/statistics/population.html website].

Collected data includes population data (citizenship, place of residence, place of birth, position in household, number of children, religion, languages, education, profession, place of work, etc.), household data (number of individuals living in the household, etc.), accommodation data (surface area, amount of rent paid, etc.) and building data (geo[[coordinate]]s, time of construction, number of floors, etc.). Participation is compulsory and reached 99.87% of the population in 2000.<ref>[http://www.bfs.admin.ch/bfs/portal/en/index/infothek/erhebungen__quellen/blank/blank/vz/uebersicht.html Overview of the Federal Population Census] {{Webarchive|url=https://web.archive.org/web/20121115060641/http://www.bfs.admin.ch/bfs/portal/en/index/infothek/erhebungen__quellen/blank/blank/vz/uebersicht.html |date=15 November 2012 }}, Swiss Federal Statistical Office, accessed October 2007</ref>

Since 2010, the population census has been carried out and analysed annually in a new format by the Federal Statistical Office (FSO). In order to ease the burden on the population, the information is primarily drawn from population registers and supplemented by sample surveys. Only a small proportion of the population (about 5%) are surveyed in writing or by telephone. The first reference day for the new census was 31 December 2010.

At the end of 2022, there were about four million private households in Switzerland, of which more than a third are inhabited by only one person. Since 1970, this number has more than tripled.<ref name="SWI swissinfo.ch 2023 r564">{{cite web | title=Number of single-person households triples in Switzerland | website=SWI swissinfo.ch | date=2023-10-05 | url=https://www.swissinfo.ch/eng/number-of-single-person-households-triples-in-switzerland/48863422 | access-date=2023-10-06}}</ref>